Hope this is of some help.

1841 Census: Trendeal, Ladock, Powder, Cornwall
MINERS Stephen M 40 Ag Lab
Stephen 8
William 5
John 3
John M 40 Ag Lab
Grace 14
John 11 (all born in Cornwall)

1851 Census: 15 Sutton Place, Plymouth Charles Martyr, Devon
John BONATHAN Head M 25 Rope Maker Buckley-DEV
Ansis Wife M 25 Bratton-CON
Susannah Daur U 2 Plymouth-DEV
William Son U 1 Plymouth-DEV
Thomas MINERS Lodg U 19 Ropemaker Tavistock-DEV

1851 Census: 8 Bilbury Street, Plymouth Charles Martyr, Devon
William MINERS Head M 25 Grocer Tavistock-Dev
Alaria MINERS Wife M 30 Brixton-Dev
Good luck.